Method, device and software package for smoothing a...

G - Physics – 01 – V

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G01V 1/30 (2006.01) G01V 1/28 (2006.01)

Patent

CA 2489536

The invention concerns a method for smoothing a subsurface property in a geological structure represented by seismic measurements comprising a step (100) which consists in digital modelling by continuous local seismic traces, calculating an optimal offset and defining a conditional neighbourhood of a reference central continuous local seismic trace; a step (101) which consists in selecting the property to be smoothed on a conditional neighbourhood; a third step (102) which consists in substituting properties of the conditional neighbourhood with offset properties; and a fourth step (103) which consists in selecting an average of the properties offset on the conditional neighbourhood at step (102).

Un procédé de lissage d'une propriété de subsurface dans une structure géologique représentée par mesures sismiques comprend une étape 100 de modélisation numérique par traces sismiques locales continues, de calcul du décalage optimal et de définition du voisinage conditionnel d'une trace sismique locale continue "centrale" de référence ; une étape 101 de choix de la propriété à lisser sur un voisinage conditionnel ; une troisième étape 102 de remplacement des propriétés du voisinage conditionnel par des propriétés décalées ; et une quatrième étape 103 de choix d'une moyenne des propriétés décalées sur le voisinage conditionnel à l'étape 102.

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